Fix ResumableTCPSocket destruction.

extensions/browser/api/socket/tcp_socket.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_BROWSER_API_SOCKET_TCP_SOCKET_H_
 #define EXTENSIONS_BROWSER_API_SOCKET_TCP_SOCKET_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 97 matching lines @@
 // socket objects with additional properties related to the behavior defined in
 // the "sockets.tcp" namespace.
 class ResumableTCPSocket : public TCPSocket {
  public:
   explicit ResumableTCPSocket(const std::string& owner_extension_id);
   explicit ResumableTCPSocket(
       std::unique_ptr<net::TCPClientSocket> tcp_client_socket,
       const std::string& owner_extension_id,
       bool is_connected);
 
+  ~ResumableTCPSocket() override;
+
   // Overriden from ApiResource
   bool IsPersistent() const override;
 
   const std::string& name() const { return name_; }
   void set_name(const std::string& name) { name_ = name; }
 
   bool persistent() const { return persistent_; }
   void set_persistent(bool persistent) { persistent_ = persistent; }
 
   int buffer_size() const { return buffer_size_; }
@@ skipping 49 matching lines @@
   // suspended - see sockets_tcp_server.idl.
   bool persistent_;
   // Flag indicating whether a connected socket blocks its peer from sending
   // more data - see sockets_tcp_server.idl.
   bool paused_;
 };
 
 }  //  namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_SOCKET_TCP_SOCKET_H_